In the first year of life, the baby’s height and weight, as well as the development of movement, are very fast. “A lift head, two lift chest, three turn six sit, seven roll eight crawl”, this baby growth and development of the mantra I’m afraid is memorized by the mother. For the careful mommy, the baby is slightly fat, thin, shorter than children of the same age, talking later …… will be nervous, afraid that the child will have any problems. For the careless moms, when the baby does develop a problem, but not necessarily early detection, especially the smaller baby, more likely to be ignored. The former needs to recognize exactly what kind of abnormality needs attention. The careless mother will need to take a good look at the content of the article. The following 13 kinds of baby abnormal behavior is worth noting: 1, the newborn period, if the baby’s head circumference looks significantly small, to consider whether there is a small head deformity. When a normal newborn is born, the head circumference of a male baby is 31.8 to 36.3 cm, and that of a female baby is 30.9 to 36.1 cm; at full term, the head circumference of a male baby is 35.4 to 40.2 cm, and that of a female baby is 34.7 to 39.5 cm. 2.After birth, the baby is drowsy all day long and has poor sucking ability; rarely cries, is not easily awakened, does not give trouble to others, does not respond to the surroundings, lacks interest, and has poor attention and reaction at the same time. Although such a baby may be mistakenly thought to be well behaved by parents, it may also be a manifestation of psychological behavior disorder and needs to be diagnosed by a doctor. 3.At 3 months of age, the baby’s neck is still soft and weak, and after 3 months of age, he cannot lift his head when lying prone, and his hands are always in fists, accompanied by other signs of backward motor development; he does not pay attention to what others say, does not look at surrounding objects or does not respond to surrounding sounds, is insensitive, does not smile when he sees his relatives, and does not respond to anything. 4.At about 3 months of age, baby often likes to gaze at his hands and play with them repeatedly. If baby continues this action after 6 months, it may be an abnormal situation. 5.At 6 months of age, baby’s neck is still weak, eyes always look at their hands and do not respond to people and things around them, and lack interest in their relatives, they do not chew when eating and often have difficulty swallowing, they always lie down honestly every day, sleep all day, never cry, and have no request to eat or play. 6.By 8-9 months old, the baby still can’t crawl, sitting is not particularly stable, and can’t even stand independently holding something by itself, still can’t hold hands together in front of chest, and can’t grasp some smaller things with hands; can’t make simple syllables, always lying down every day, won’t refuse to move, and has no request to eat and play, we should consider that there is a problem with intelligence. 7.Baby still can’t crawl and sit at the age of one year, can’t extend fingers, can’t point to people and things with index finger, and can’t do the action of picking and digging; often shows aimless hyperactivity, can’t concentrate and is easily irritated. 8.At this stage of 6-12 months, normal babies always like to put things in their mouths, but as they grow up, they will not do so anymore, while for babies with intellectual problems, this behavior will persist until after 2 years old. 9.After the baby is one year old, in addition to not sitting and crawling, it also can’t stand, and its eyes are sluggish, its whole body is flabby, its life ability is poor, and it often drools, while a normal baby will not drool at this age. 10.When babies walk, they often fall down because their feet collide with each other, but this will not happen again after normal babies can walk. 11.The baby learns to chew food very late, so it is difficult to feed, and often has difficulty swallowing because it cannot chew solid food, and this causes frequent vomiting when eating. 12.At the age of 1 year, 3 months to 4 months, normal babies will no longer throw things to the ground intentionally, while this behavior will continue for a long time in babies with abnormal intelligence. 13.No response to stimulation, such as the need for repeated and continuous stimulation to cause crying, and manifested as a weak or straightened cry, sometimes screaming, unlike the normal child’s cry with pitch change. “This is the basic rule of infant development. If parents find that their child has abnormalities (far from the rule), they should rule out brain development problems, the sooner the better. If the development is delayed, you should go to the neurological rehabilitation department of the hospital for a comprehensive assessment and treatment. Baby behavior development parental training is indispensable Although many skills of the child is born, but if parents do not give a good growth environment, such as let the child sleep in bed all day and do not let the child out of activity, then the child’s growth and development is also afraid to lag. It is recommended that parents should help their babies train according to their growth and development characteristics, which is beneficial to the growth and development of the child. Gross motor training: 0-3 months parents can help their children practice lifting their heads; 3-6 months to practice side-to-side, holding the baby in the arms to jump; 7-9 months to practice sitting alone, crawling; 10 months to practice holding the railing to stand up, sit down and walk sideways; 12-15 months to practice walking alone; fine motor training: 5-6 months to let the child practice reaching out to grab the toys in front of them; 6-9 months to practice 2 hands to pass the toy, take 2 blocks to knock; 10-12 months children pinch beans, small dolls and other small items with their fingers (pay attention to safety); 1-2 years old in the company of parents to practice building blocks, beans into the bottle. Warm tips: each baby will have its own characteristics, as long as the baby can do it on their own, it is acceptable, but never force the baby to develop – forced training.